除了BODY
和HTML
的滚动条,在触屏下几乎所有浏览器都不支持DIV
的滚动条(说几乎是因为新版的IOS已经支持)
这个应该算是完美解决方案了,需要注意的是setTimeout
,必须要在内部的HTML解析完毕,JS获取它的高度不会出错的时候才可以执行,一般来说100毫秒差不多了.如果内部是个大图片,且高度不固定的时候,倒计时要久一点.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 | <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Strict//EN" "http://www.w3.org/TR/html4/strict.dtd"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no"> <meta name="apple-mobile-web-app-capable" content="yes" /> <title>Scrolling DIV demo on iPhone / iPod Touch</title> <meta name="description" content="The following demo works only on iPhone and iPod Touch +2.x"> <script type="text/javascript" src="iscroll.js?v=2.1"></script> <script type="text/javascript"> var myScroll; function loaded() { setTimeout( function() { document.ontouchmove = function(e) { e.preventDefault(); return false; } myScroll = new iScroll( document.getElementById('scroller') ); }, 100); } window.addEventListener('load', loaded, true); </script> <style type="text/css" media="all"> body { padding:0; margin:0; font-size:12px; } div { width:320px; text-align:center; margin-bottom:5px; } .bigger { font-size:1.2em; } #header { background-color:#aaa; padding:10px 0; } #footer { background-color:#acc; padding:10px 0; } #wrapper { position:relative; /* needed */ z-index:1; /* needed and important */ height:200px; /* needed */ overflow:hidden; /* suggested */ } #scroller { position:absolute; /* optional. Seems to work with absolute, relative and without it */ top:0; /* optional */ width:300px; padding:10px; background:#eee; } #scroller strong { font-size:200%; } </style> </head> <body> <div id="header"><a href="http://cubiq.org/scrolling-div-on-iphone-ipod-touch/5">« Back to related article</a> | <a href="http://cubiq.org/">Cubiq.org</a></div> <div id="wrapper"> <div id="scroller"> <p><strong>Scroll Me!</strong><p> <p class="bigger">This is a demo to get iPhone scroll inside a fixed height DIV. Since it relies on gestures, it works only on iPhone/iPod touch and not on Safari for Mac.<br /><a href="http://cubiq.org/scrolling-div-on-iphone-ipod-touch/5">Read more about this on my blog</a>.<br /></p> <p>Sed ut perspiciatis unde omnis iste natus error sit voluptatem accusantium doloremque laudantium, totam rem aperiam, eaque ipsa quae ab illo inventore veritatis et quasi architecto beatae vitae dicta sunt explicabo. Nemo enim ipsam voluptatem quia voluptas sit aspernatur aut odit aut fugit, sed quia consequuntur magni dolores eos qui ratione voluptatem sequi nesciunt. Neque porro quisquam est, qui dolorem ipsum quia dolor sit amet, consectetur, adipisci velit, sed quia non numquam eius modi tempora incidunt ut labore et dolore magnam aliquam quaerat voluptatem. Ut enim ad minima veniam, quis nostrum exercitationem ullam corporis suscipit laboriosam, nisi ut aliquid ex ea commodi consequatur? Quis autem vel eum iure reprehenderit qui in ea voluptate velit esse quam nihil molestiae consequatur, vel illum qui dolorem eum fugiat quo voluptas nulla pariatur?</p> <p><strong>Welcome to middle</strong><p> <p class="bigger">This is a demo to get iPhone scroll inside a fixed height DIV. Since it relies on gestures, it works only on iPhone/iPod touch and not on Safari for Mac.<br /><a href="http://cubiq.org/scrolling-div-on-iphone-ipod-touch/5">Read more about this on my blog</a>.<br /></p> <p>Sed ut perspiciatis unde omnis iste natus error sit voluptatem accusantium doloremque laudantium, totam rem aperiam, eaque ipsa quae ab illo inventore veritatis et quasi architecto beatae vitae dicta sunt explicabo. Nemo enim ipsam voluptatem quia voluptas sit aspernatur aut odit aut fugit, sed quia consequuntur magni dolores eos qui ratione voluptatem sequi nesciunt. Neque porro quisquam est, qui dolorem ipsum quia dolor sit amet, consectetur, adipisci velit, sed quia non numquam eius modi tempora incidunt ut labore et dolore magnam aliquam quaerat voluptatem. Ut enim ad minima veniam, quis nostrum exercitationem ullam corporis suscipit laboriosam, nisi ut aliquid ex ea commodi consequatur? Quis autem vel eum iure reprehenderit qui in ea voluptate velit esse quam nihil molestiae consequatur, vel illum qui dolorem eum fugiat quo voluptas nulla pariatur?</p> <p id="a"><strong>End of scrolling</strong><p> </div> </div> <div id="footer"><a href="#" onclick="myScroll.scrollTo(0, '500ms');return false">scroll to top</a> | <a href="#" onclick="myScroll.scrollTo(myScroll.maxScroll/2, '500ms');return false">scroll to middle</a> | <a href="#" onclick="myScroll.scrollTo(myScroll.maxScroll, '500ms');return false">scroll to bottom</a></div> </body> </html> |
iscroll.js
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 | /** * * Find more about the scrolling function at * http://cubiq.org/iscroll * * Copyright (c) 2010 Matteo Spinelli, http://cubiq.org/ * Released under MIT license * http://cubiq.org/dropbox/mit-license.txt * * Version 3.6 - Last updated: 2010.08.24 * */ (function(){ function iScroll (el, options) { var that = this, i; that.element = typeof el == 'object' ? el : document.getElementById(el); that.wrapper = that.element.parentNode; that.element.style.webkitTransitionProperty = '-webkit-transform'; that.element.style.webkitTransitionTimingFunction = 'cubic-bezier(0,0,0.25,1)'; that.element.style.webkitTransitionDuration = '0'; that.element.style.webkitTransform = translateOpen + '0,0' + translateClose; // Default options that.options = { bounce: has3d, momentum: has3d, checkDOMChanges: true, topOnDOMChanges: false, hScrollbar: has3d, vScrollbar: has3d, fadeScrollbar: isIphone || isIpad || !isTouch, shrinkScrollbar: isIphone || isIpad || !isTouch, desktopCompatibility: false, overflow: 'hidden', snap: false }; // User defined options if (typeof options == 'object') { for (i in options) { that.options[i] = options[i]; } } if (that.options.desktopCompatibility) { that.options.overflow = 'hidden'; } that.wrapper.style.overflow = that.options.overflow; that.refresh(); window.addEventListener('onorientationchange' in window ? 'orientationchange' : 'resize', that, false); if (isTouch || that.options.desktopCompatibility) { that.element.addEventListener(START_EVENT, that, false); that.element.addEventListener(MOVE_EVENT, that, false); that.element.addEventListener(END_EVENT, that, false); } if (that.options.checkDOMChanges) { that.element.addEventListener('DOMSubtreeModified', that, false); } } iScroll.prototype = { x: 0, y: 0, enabled: true, handleEvent: function (e) { var that = this; switch (e.type) { case START_EVENT: that.touchStart(e); break; case MOVE_EVENT: that.touchMove(e); break; case END_EVENT: that.touchEnd(e); break; case 'webkitTransitionEnd': that.transitionEnd(); break; case 'orientationchange': case 'resize': that.refresh(); break; case 'DOMSubtreeModified': that.onDOMModified(e); break; } }, onDOMModified: function (e) { var that = this; // (Hopefully) execute onDOMModified only once if (e.target.parentNode != that.element) { return; } setTimeout(function () { that.refresh(); }, 0); if (that.options.topOnDOMChanges && (that.x!=0 || that.y!=0)) { that.scrollTo(0,0,'0'); } }, refresh: function () { var that = this, resetX = this.x, resetY = this.y, snap; that.scrollWidth = that.wrapper.clientWidth; that.scrollHeight = that.wrapper.clientHeight; that.scrollerWidth = that.element.offsetWidth; that.scrollerHeight = that.element.offsetHeight; that.maxScrollX = that.scrollWidth - that.scrollerWidth; that.maxScrollY = that.scrollHeight - that.scrollerHeight; that.directionX = 0; that.directionY = 0; if (that.scrollX) { if (that.maxScrollX >= 0) { resetX = 0; } else if (that.x < that.maxScrollX) { resetX = that.maxScrollX; } } if (that.scrollY) { if (that.maxScrollY >= 0) { resetY = 0; } else if (that.y < that.maxScrollY) { resetY = that.maxScrollY; } } // Snap if (that.options.snap) { that.maxPageX = -Math.floor(that.maxScrollX/that.scrollWidth); that.maxPageY = -Math.floor(that.maxScrollY/that.scrollHeight); snap = that.snap(resetX, resetY); resetX = snap.x; resetY = snap.y; } if (resetX!=that.x || resetY!=that.y) { that.setTransitionTime('0'); that.setPosition(resetX, resetY, true); } that.scrollX = that.scrollerWidth > that.scrollWidth; that.scrollY = !that.scrollX || that.scrollerHeight > that.scrollHeight; // Update horizontal scrollbar if (that.options.hScrollbar && that.scrollX) { that.scrollBarX = that.scrollBarX || new scrollbar('horizontal', that.wrapper, that.options.fadeScrollbar, that.options.shrinkScrollbar); that.scrollBarX.init(that.scrollWidth, that.scrollerWidth); } else if (that.scrollBarX) { that.scrollBarX = that.scrollBarX.remove(); } // Update vertical scrollbar if (that.options.vScrollbar && that.scrollY && that.scrollerHeight > that.scrollHeight) { that.scrollBarY = that.scrollBarY || new scrollbar('vertical', that.wrapper, that.options.fadeScrollbar, that.options.shrinkScrollbar); that.scrollBarY.init(that.scrollHeight, that.scrollerHeight); } else if (that.scrollBarY) { that.scrollBarY = that.scrollBarY.remove(); } }, setPosition: function (x, y, hideScrollBars) { var that = this; that.x = x; that.y = y; that.element.style.webkitTransform = translateOpen + that.x + 'px,' + that.y + 'px' + translateClose; // Move the scrollbars if (!hideScrollBars) { if (that.scrollBarX) { that.scrollBarX.setPosition(that.x); } if (that.scrollBarY) { that.scrollBarY.setPosition(that.y); } } }, setTransitionTime: function(time) { var that = this; time = time || '0'; that.element.style.webkitTransitionDuration = time; if (that.scrollBarX) { that.scrollBarX.bar.style.webkitTransitionDuration = time; that.scrollBarX.wrapper.style.webkitTransitionDuration = has3d && that.options.fadeScrollbar ? '300ms' : '0'; } if (that.scrollBarY) { that.scrollBarY.bar.style.webkitTransitionDuration = time; that.scrollBarY.wrapper.style.webkitTransitionDuration = has3d && that.options.fadeScrollbar ? '300ms' : '0'; } }, touchStart: function(e) { var that = this, matrix; e.preventDefault(); e.stopPropagation(); if (!that.enabled) { return; } that.scrolling = true; // This is probably not needed, but may be useful if iScroll is used in conjuction with other frameworks that.moved = false; that.dist = 0; that.setTransitionTime('0'); // Check if the scroller is really where it should be if (that.options.momentum || that.options.snap) { matrix = new WebKitCSSMatrix(window.getComputedStyle(that.element).webkitTransform); if (matrix.e != that.x || matrix.f != that.y) { document.removeEventListener('webkitTransitionEnd', that, false); that.setPosition(matrix.e, matrix.f); that.moved = true; } } that.touchStartX = isTouch ? e.changedTouches[0].pageX : e.pageX; that.scrollStartX = that.x; that.touchStartY = isTouch ? e.changedTouches[0].pageY : e.pageY; that.scrollStartY = that.y; that.scrollStartTime = e.timeStamp; that.directionX = 0; that.directionY = 0; }, touchMove: function(e) { var that = this, pageX = isTouch ? e.changedTouches[0].pageX : e.pageX, pageY = isTouch ? e.changedTouches[0].pageY : e.pageY, leftDelta = that.scrollX ? pageX - that.touchStartX : 0, topDelta = that.scrollY ? pageY - that.touchStartY : 0, newX = that.x + leftDelta, newY = that.y + topDelta; if (!that.scrolling) { return; } //e.preventDefault(); e.stopPropagation(); // Stopping propagation just saves some cpu cycles (I presume) that.touchStartX = pageX; that.touchStartY = pageY; // Slow down if outside of the boundaries if (newX >= 0 || newX < that.maxScrollX) { newX = that.options.bounce ? Math.round(that.x + leftDelta / 3) : (newX >= 0 || that.maxScrollX>=0) ? 0 : that.maxScrollX; } if (newY >= 0 || newY < that.maxScrollY) { newY = that.options.bounce ? Math.round(that.y + topDelta / 3) : (newY >= 0 || that.maxScrollY>=0) ? 0 : that.maxScrollY; } if (that.dist > 5) { // 5 pixels threshold is needed on Android, but also on iPhone looks more natural that.setPosition(newX, newY); that.moved = true; that.directionX = leftDelta > 0 ? -1 : 1; that.directionY = topDelta > 0 ? -1 : 1; } else { that.dist+= Math.abs(leftDelta) + Math.abs(topDelta); } }, touchEnd: function(e) { var that = this, time = e.timeStamp - that.scrollStartTime, point = isTouch ? e.changedTouches[0] : e, target, ev, momentumX, momentumY, newDuration = 0, newPositionX = that.x, newPositionY = that.y, snap; if (!that.scrolling) { return; } that.scrolling = false; if (!that.moved) { that.resetPosition(); if (isTouch) { // Find the last touched element target = point.target; while (target.nodeType != 1) { target = target.parentNode; } // Create the fake event target.style.pointerEvents = 'auto'; ev = document.createEvent('MouseEvents'); ev.initMouseEvent('click', true, true, e.view, 1, point.screenX, point.screenY, point.clientX, point.clientY, e.ctrlKey, e.altKey, e.shiftKey, e.metaKey, 0, null); ev._fake = true; target.dispatchEvent(ev); } return; } if (!that.options.snap && time > 250) { // Prevent slingshot effect that.resetPosition(); return; } if (that.options.momentum) { momentumX = that.scrollX === true ? that.momentum(that.x - that.scrollStartX, time, that.options.bounce ? -that.x + that.scrollWidth/5 : -that.x, that.options.bounce ? that.x + that.scrollerWidth - that.scrollWidth + that.scrollWidth/5 : that.x + that.scrollerWidth - that.scrollWidth) : { dist: 0, time: 0 }; momentumY = that.scrollY === true ? that.momentum(that.y - that.scrollStartY, time, that.options.bounce ? -that.y + that.scrollHeight/5 : -that.y, that.options.bounce ? (that.maxScrollY < 0 ? that.y + that.scrollerHeight - that.scrollHeight : 0) + that.scrollHeight/5 : that.y + that.scrollerHeight - that.scrollHeight) : { dist: 0, time: 0 }; newDuration = Math.max(Math.max(momentumX.time, momentumY.time), 1); // The minimum animation length must be 1ms newPositionX = that.x + momentumX.dist; newPositionY = that.y + momentumY.dist; } if (that.options.snap) { snap = that.snap(newPositionX, newPositionY); newPositionX = snap.x; newPositionY = snap.y; newDuration = Math.max(snap.time, newDuration); } that.scrollTo(newPositionX, newPositionY, newDuration + 'ms'); }, transitionEnd: function () { var that = this; document.removeEventListener('webkitTransitionEnd', that, false); that.resetPosition(); }, resetPosition: function () { var that = this, resetX = that.x, resetY = that.y; if (that.x >= 0) { resetX = 0; } else if (that.x < that.maxScrollX) { resetX = that.maxScrollX; } if (that.y >= 0 || that.maxScrollY > 0) { resetY = 0; } else if (that.y < that.maxScrollY) { resetY = that.maxScrollY; } if (resetX != that.x || resetY != that.y) { that.scrollTo(resetX, resetY); } else { if (that.moved) { that.onScrollEnd(); // Execute custom code on scroll end that.moved = false; } // Hide the scrollbars if (that.scrollBarX) { that.scrollBarX.hide(); } if (that.scrollBarY) { that.scrollBarY.hide(); } } }, snap: function (x, y) { var that = this, time; if (that.directionX > 0) { x = Math.floor(x/that.scrollWidth); } else if (that.directionX < 0) { x = Math.ceil(x/that.scrollWidth); } else { x = Math.round(x/that.scrollWidth); } that.pageX = -x; x = x * that.scrollWidth; if (x > 0) { x = that.pageX = 0; } else if (x < that.maxScrollX) { that.pageX = that.maxPageX; x = that.maxScrollX; } if (that.directionY > 0) { y = Math.floor(y/that.scrollHeight); } else if (that.directionY < 0) { y = Math.ceil(y/that.scrollHeight); } else { y = Math.round(y/that.scrollHeight); } that.pageY = -y; y = y * that.scrollHeight; if (y > 0) { y = that.pageY = 0; } else if (y < that.maxScrollY) { that.pageY = that.maxPageY; y = that.maxScrollY; } // Snap with constant speed (proportional duration) time = Math.round(Math.max( Math.abs(that.x - x) / that.scrollWidth * 500, Math.abs(that.y - y) / that.scrollHeight * 500 )); return { x: x, y: y, time: time }; }, scrollTo: function (destX, destY, runtime) { var that = this; if (that.x == destX && that.y == destY) { that.resetPosition(); return; } that.moved = true; that.setTransitionTime(runtime || '350ms'); that.setPosition(destX, destY); if (runtime==='0' || runtime=='0s' || runtime=='0ms') { that.resetPosition(); } else { document.addEventListener('webkitTransitionEnd', that, false); // At the end of the transition check if we are still inside of the boundaries } }, scrollToPage: function (pageX, pageY, runtime) { var that = this, snap; if (!that.options.snap) { that.pageX = -Math.round(that.x / that.scrollWidth); that.pageY = -Math.round(that.y / that.scrollHeight); } if (pageX == 'next') { pageX = ++that.pageX; } else if (pageX == 'prev') { pageX = --that.pageX; } if (pageY == 'next') { pageY = ++that.pageY; } else if (pageY == 'prev') { pageY = --that.pageY; } pageX = -pageX*that.scrollWidth; pageY = -pageY*that.scrollHeight; snap = that.snap(pageX, pageY); pageX = snap.x; pageY = snap.y; that.scrollTo(pageX, pageY, runtime || '500ms'); }, scrollToElement: function (el, runtime) { el = typeof el == 'object' ? el : this.element.querySelector(el); if (!el) { return; } var that = this, x = that.scrollX ? -el.offsetLeft : 0, y = that.scrollY ? -el.offsetTop : 0; if (x >= 0) { x = 0; } else if (x < that.maxScrollX) { x = that.maxScrollX; } if (y >= 0) { y = 0; } else if (y < that.maxScrollY) { y = that.maxScrollY; } that.scrollTo(x, y, runtime); }, momentum: function (dist, time, maxDistUpper, maxDistLower) { var friction = 2.5, deceleration = 1.2, speed = Math.abs(dist) / time * 1000, newDist = speed * speed / friction / 1000, newTime = 0; // Proportinally reduce speed if we are outside of the boundaries if (dist > 0 && newDist > maxDistUpper) { speed = speed * maxDistUpper / newDist / friction; newDist = maxDistUpper; } else if (dist < 0 && newDist > maxDistLower) { speed = speed * maxDistLower / newDist / friction; newDist = maxDistLower; } newDist = newDist * (dist < 0 ? -1 : 1); newTime = speed / deceleration; return { dist: Math.round(newDist), time: Math.round(newTime) }; }, onScrollEnd: function () {}, destroy: function (full) { var that = this; window.removeEventListener('onorientationchange' in window ? 'orientationchange' : 'resize', that, false); that.element.removeEventListener(START_EVENT, that, false); that.element.removeEventListener(MOVE_EVENT, that, false); that.element.removeEventListener(END_EVENT, that, false); document.removeEventListener('webkitTransitionEnd', that, false); if (that.options.checkDOMChanges) { that.element.removeEventListener('DOMSubtreeModified', that, false); } if (that.scrollBarX) { that.scrollBarX = that.scrollBarX.remove(); } if (that.scrollBarY) { that.scrollBarY = that.scrollBarY.remove(); } if (full) { that.wrapper.parentNode.removeChild(that.wrapper); } return null; } }; function scrollbar (dir, wrapper, fade, shrink) { var that = this, style; that.dir = dir; that.fade = fade; that.shrink = shrink; that.uid = ++uid; // Create main scrollbar that.bar = document.createElement('div'); style = 'position:absolute;top:0;left:0;-webkit-transition-timing-function:cubic-bezier(0,0,0.25,1);pointer-events:none;-webkit-transition-duration:0;-webkit-transition-delay:0;-webkit-transition-property:-webkit-transform;z-index:10;background:rgba(0,0,0,0.5);' + '-webkit-transform:' + translateOpen + '0,0' + translateClose + ';' + (dir == 'horizontal' ? '-webkit-border-radius:3px 2px;min-width:6px;min-height:5px' : '-webkit-border-radius:2px 3px;min-width:5px;min-height:6px'); that.bar.setAttribute('style', style); // Create scrollbar wrapper that.wrapper = document.createElement('div'); style = '-webkit-mask:-webkit-canvas(scrollbar' + that.uid + that.dir + ');position:absolute;z-index:10;pointer-events:none;overflow:hidden;opacity:0;-webkit-transition-duration:' + (fade ? '300ms' : '0') + ';-webkit-transition-delay:0;-webkit-transition-property:opacity;' + (that.dir == 'horizontal' ? 'bottom:2px;left:2px;right:7px;height:5px' : 'top:2px;right:2px;bottom:7px;width:5px;'); that.wrapper.setAttribute('style', style); // Add scrollbar to the DOM that.wrapper.appendChild(that.bar); wrapper.appendChild(that.wrapper); } scrollbar.prototype = { init: function (scroll, size) { var that = this, ctx; // Create scrollbar mask if (that.dir == 'horizontal') { if (that.maxSize != that.wrapper.offsetWidth) { that.maxSize = that.wrapper.offsetWidth; ctx = document.getCSSCanvasContext("2d", "scrollbar" + that.uid + that.dir, that.maxSize, 5); ctx.fillStyle = "rgb(0,0,0)"; ctx.beginPath(); ctx.arc(2.5, 2.5, 2.5, Math.PI/2, -Math.PI/2, false); ctx.lineTo(that.maxSize-2.5, 0); ctx.arc(that.maxSize-2.5, 2.5, 2.5, -Math.PI/2, Math.PI/2, false); ctx.closePath(); ctx.fill(); } } else { if (that.maxSize != that.wrapper.offsetHeight) { that.maxSize = that.wrapper.offsetHeight; ctx = document.getCSSCanvasContext("2d", "scrollbar" + that.uid + that.dir, 5, that.maxSize); ctx.fillStyle = "rgb(0,0,0)"; ctx.beginPath(); ctx.arc(2.5, 2.5, 2.5, Math.PI, 0, false); ctx.lineTo(5, that.maxSize-2.5); ctx.arc(2.5, that.maxSize-2.5, 2.5, 0, Math.PI, false); ctx.closePath(); ctx.fill(); } } that.size = Math.max(Math.round(that.maxSize * that.maxSize / size), 6); that.maxScroll = that.maxSize - that.size; that.toWrapperProp = that.maxScroll / (scroll - size); that.bar.style[that.dir == 'horizontal' ? 'width' : 'height'] = that.size + 'px'; }, setPosition: function (pos) { var that = this; if (that.wrapper.style.opacity != '1') { that.show(); } pos = Math.round(that.toWrapperProp * pos); if (pos < 0) { pos = that.shrink ? pos + pos*3 : 0; if (that.size + pos < 7) { pos = -that.size + 6; } } else if (pos > that.maxScroll) { pos = that.shrink ? pos + (pos-that.maxScroll)*3 : that.maxScroll; if (that.size + that.maxScroll - pos < 7) { pos = that.size + that.maxScroll - 6; } } pos = that.dir == 'horizontal' ? translateOpen + pos + 'px,0' + translateClose : translateOpen + '0,' + pos + 'px' + translateClose; that.bar.style.webkitTransform = pos; }, show: function () { if (has3d) { this.wrapper.style.webkitTransitionDelay = '0'; } this.wrapper.style.opacity = '1'; }, hide: function () { if (has3d) { this.wrapper.style.webkitTransitionDelay = '350ms'; } this.wrapper.style.opacity = '0'; }, remove: function () { this.wrapper.parentNode.removeChild(this.wrapper); return null; } }; // Is translate3d compatible? var has3d = ('WebKitCSSMatrix' in window && 'm11' in new WebKitCSSMatrix()), // Device sniffing isIphone = (/iphone/gi).test(navigator.appVersion), isIpad = (/ipad/gi).test(navigator.appVersion), isAndroid = (/android/gi).test(navigator.appVersion), isTouch = isIphone || isIpad || isAndroid, // Event sniffing START_EVENT = isTouch ? 'touchstart' : 'mousedown', MOVE_EVENT = isTouch ? 'touchmove' : 'mousemove', END_EVENT = isTouch ? 'touchend' : 'mouseup', // Translate3d helper translateOpen = 'translate' + (has3d ? '3d(' : '('), translateClose = has3d ? ',0)' : ')', // Unique ID uid = 0; // Expose iScroll to the world window.iScroll = iScroll; })(); |
安卓4和IOS5+都可以使用 CSS3的新属性 -Webkit-overflow-scrolling: touch;
来解决.
给力,学习了